[Radiance-general] rtrace: warning - ambient file "af" corrupted

[Greg Ward]

Hi Daniel,

I'll leave aside the question of why you are using rtrace in a 3-phase calculation, and just address the error you are seeing.

Although the ambient cache code has changed substantially since version 4.2, this particular error does not seem related to those changes.  I would guess that this is either a problem with the system you are running on not maintaining good local file locks, or it was just a hiccup in the system that if you remove the ambient file and start again will simply go away.  So, that's what I would try first, and if you get the error again, remove the ambient file once more and run with cores=1.  I can't imagine a circumstance where you would see the error after that, but if you had to take it to -n 1 to get the problem to go away, that means your NFS lock manager is broken on your operating system.

Let us know how it goes!

-Greg

> From: Daniel Uribe <dnuribe at uc.cl>
> Date: August 8, 2016 8:57:17 AM PDT
> 
> Hello everyone,
> 
> I'm calculating the L matrix of the Three-phases method with the following Perl script:
> 
> $lum_wp1="LMX/LUM_WP-$orientation-1.lmx";
> `cat $wp | rtrace -n $cores -I -af af -ab 6 -ad 2048 -aa 0.2 octree > $lum_wp1`;
> `rm octree af`;
> 
> In Radiance 4.2 works correctly, but in Radiance 5.0 shows me the following error:
> 
> rtracertrace: warning - ambient file "af" corrupted near character 250: 
> warning - ambient file "af" corrupted near character 250
> rtrace: warning - ambient file "af" corrupted near character 4337
> 
> something changed from version 4.2 to 5.0 in rtrace? or, could I have installed something wrong?
> 
> Regards!
> 
> Daniel Uribe
> 
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